cirdna: command not found

Maybe Your $PATH variable doesn't contain the default paths? echo $PATH should give something like:

[root@server ~]# echo $PATH
/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin

If it's empty, You may set the PATH variable with this command

export PATH="/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin"

On Debian possible default full paths are:

/usr/bin/cirdna - from package: emboss

You may install the required package with command apt-get install {package}

Error in other languages:
cirdna: bevel nie gevind nie
cirdna: comandă negăsită
cirdna: comando não encontrado
cirdna: commande introuvable
cirdna: command not found
cirdna: käsku ei ole
cirdna: không tìm thấy lệnh
cirdna: komanda nerasta
cirdna: Kommando nicht gefunden.
cirdna: kommandot finns inte
cirdna: komut yok
cirdna: nie znaleziono polecenia
cirdna: níor aimsíodh an t-ordú
cirdna: no se encontró la orden
cirdna: no s'ha trobat l'ordre
cirdna: opdracht niet gevonden
cirdna: parancs nem található
cirdna: perintah tidak ditemukan
cirdna: príkaz nenájdený
cirdna: příkaz nenalezen
cirdna: команда не найдена
cirdna: командата не е открита
cirdna: 命令找不到
cirdna: コマンドが見つかりません